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Updated: Jul 3, 2026
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
High-speed electro-optic control of the optical quality factor of a silicon microcavity
Sasikanth Manipatruni1, Carl B Poitras, Qianfan Xu
1School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA. ml292@cornell.edu
Abstract:
We demonstrate electro-optic ultrafast control of the optical quality factor of an on-chip silicon microcavity. The micrometer-sized cavity is formed by light confinement between two microring resonators acting as frequency selective mirrors. The ring resonators are integrated into p-i-n junctions enabling ultrafast injection and extraction of carriers. We show tuning of the cavity quality factor from 20,000 to 6,000 in under 100 ps. We demonstrate both high-Q to low-Q and low-Q to high-Q transitions.
